Hi every one . i need to know if its possible to boost DC voltage from 0.1V source to 3.8V DC output and how to do it thx for answer :)
Posted by insurgent 2 years ago
I bought a FM transmitter for an ipod. I would like to boost the range of the device. (I know it is illegal but would like to get more range than 2 feet.) I think I need to build an external antenna but need to know where to hook it up to the thing. The transmitter I have is a ge FM transmitter for ipod.If anyone has done anything like this or have any useful links it would be great. I don't know anything about circuit making so help would be great on that as well.
Posted by thejrb 10 years ago
How can I boost my broadband access from my usb modem? I am about 2 mi from nearest cell tower and I'm getting about 2 bars of national access to about 2 bars of broadband access (slow to medium speed). When I am in town by towers I get full 4 bars of broadband, (speed is phenomenal!) Is there anyway to boost my signal from home? Can I "ghetto" rig an antenna wire from usb modem antenna to the tv antenna on top of house? Any help appreciated... I have the USB720 modem from Verizon, and a new Dell Inspiron 1520 loaded with Windows Vista. Attached is modem specs from Verizon wireless. Thanx, The Revelator P.S. Hardline/fiber optics is not an option here, only cell phone access at house.
Posted by revelator 10 years ago
Sir, I am Anand from india, I will made a project based on bicycle. I have take 5 to 80v From my Bicycle pedals. Generator power is in AC 3-Phase. I want to made next step. in this I want to this 3-Phase AC 5 to 80V are constant At 48V DC. I put the 4 batteries in series. 12V 20Ah battery I use. I want to charge this batteries please help me. Thank you.
Posted by AnandC10 2 years ago
Hi, brought two boost buck converters to build a bench power supply from a atx psu. Brought the LM version first as i have read previously that these are quite efficient, then seen the LTC one, so thought i might as well buy that as well. Looks like the LTC board will be able to go down to lower voltages and appears to have a greater efficiency, quoted up too 98%, compared with the LM's at around 80%. Thou i understand that with adjustments changes efficncey. LM2577S LM2596S http://www.ebay.co.uk/itm/281777880409?_trksid=p2057872.m2749.l2649&ssPageName;=STRK%3AMEBIDX%3AIT LTC3780 http://www.ebay.co.uk/itm/332009159315?_trksid=p2057872.m2749.l2649&ssPageName;=STRK%3AMEBIDX%3AIT Which one do you think i should use? Regards
Posted by JonathanM221 1 year ago
Hello, I want to ask about your opinions about my websites forum (not mine per say but my good friends), http://yowee.netai.net My friend, the admin, hydronator, is considering taking the site down because we dont get much traffic, and no-one other than a few of the members of the old forum which crashed, have joined the new forum. I want to know, what could be done to improve the site, and also, what would be a better way to describe the forum, other than "fun weapons designing ", since that doesnt exactly sound right, at yowee i and a few others design things that might be considered weapons, like potato launchers or pen catapults , things that you wouldnt call toy weapons. anyway, we need a positive way to describe what we do, as well as ways to attract more traffic, or else hydronator is going to shut down the site :( because he is depressed, and is being rather negative in turn of recent events. Basically what yowee is, or what it was originally was " a community of friends having fun conspiring against society and plotting fun ways to have fun ,prank and be a nuisance" somewhat like anarchist community in many ways, except completely different, not being anarchists and all. Its hard to describe, which is one of the reason ide like to ask for help!
Posted by oldmanbeefjerky 7 years ago
I'm trying to make a remote shutter release for my large format lenses. I found a solenoid that will do the trick. It's 12v / 36 ohm push solenoid with 3/8" travel. I prefer to drive this thing with a single AA battery. Is there a simple way to boost 1.5v?
Posted by JonLoder 5 years ago
Hi all, I just bought the Smartlab: You Build It - Rock Star Microphone toy from a Goodwill. It's a great toy; it has a microphone that let's me transmit my voice over the radio (perfect for a Halloween haunted house when the static-mad radio bursts to life with terrifying voice-overs!!!:) works but only up to about a six foot range. I would like to be in a different room and use the microphone but I need to boost the range considerably - I understand that the FCC has rules about this. Moving forward, I don't know how to do this (at all....). Are there commercial range boosters that I can use? Are there mods that someone can recommend? Are these toys designed to NOT transmit beyond six feet even with mods? I wish I could give more information about the tech specs of the toy but I will have to try to de-solder the metal plate covering the circuit board (plus I don't know what specs to look for yet). Advice appreciated, DAZU
Posted by damianzuch 6 years ago
Using a transistor to boost the output from a quartz clock to drive a larger motor in steps. Is the idea sound what would I need? Having read a couple of instructables on equitorial drives, I found myself wondering why you couldn't just use a quartz clock movement to drive one? They don't produce much torque is the answer to that one. Why not? I took one appart to find out. The gear chain is very flimsy moulded polyethylene, or maybe nylon. the power comes from a tiny armature that makes 1 turn a second in 2 pulses the magnetic pulses are provided by a little cuircit board with the quartz ossilator on it. Here endeth my actual knowledge. My knowledge of electronics is minimal give me a good set of instructions and I can build it (unless its a joule thief but thats a different matter) but don't ask me how it works. My limited understanding of a transistor is if you put a small current or voltage across 2 pins you can get a bigger current or voltage to flow across one of them and the third, something like a relay. I was thinking if I took the out put from the quartz cuircuit that provides the magnetic pulses and used it to trigger a transistor to pulse a higher voltage and current through a small 3 pole motor kicking it around 1 pole per pulse. The motor I have a salvaged and rebuilt in an earlier instructable runs on 3V and draws 0.2A when not under load. the largest motor I have to hand is a big 7 pole one designed to power model planes or cars draws up to 15A on 7.2V the timer cuircuit for that one needed 3 Mosfet's in parralle so I'm guessing thats not possible.
Posted by Stan1y 4 years ago
I've been contemplating the use of high power amber or yellow LEDs in a low cost automotive warning system (think tow truck). However, car electrical systems are not set at 12v. They can range from 9 to 19v with spikes up to 70v. To protect the components I would need more than just a current limiting resister. Under those conditions they would need a buck-boost driver. Unfortunately I'm new to ICs/power LEDa and not sure where to start. I was hoping someone would be able to help me out with further guidance. I Thanks! -Mike
Posted by vanmankline 8 years ago
I need a dc-dc boost converter that will step 25.9 volts at 2600 mah up to around 388v at 360 ma will I need a battery back with a greater amp output I can get up to 12000 mah at the same voltage any suggestions I am trying to charge a .1 farad cap bank that consists of only 10 caps Any help is appreciated -TDC
Posted by ThinkDesignConstruct 3 years ago
So I have this idea to put an Ipod into an old CD player case to make the ultimate Ipod Pod. I want to use the Minty boost for battery charging, but I would also like to use a DPDT switch to switch between the DC power of the batteries to AC power of 4.5 volts. I tried to research this and came up with a plan, but I'm not sure if this would work.
Posted by fresh1 8 years ago
First off, I'm a noob, but so far I have learned a lot. I have made the mintyboost with the solar ipod charger mod, but I had to put it in something different that a mint can. So naturally I went back to my roots and thought of the old school gameboy. So my ??? for you the educated and creative community is what else can I put in this case for fun? On the front are 8 possible switches I could use to turn on/off led lights, mp3player, spy camera, taser, simon says, etc I just wanted your ideas on what you would put in. Thanks!
Posted by 007onionrings 8 years ago
Hello ladies and gentlemen. Im looking into buying a laptop powerbank charger for my Lenovo X1 carbon that charges at 20v 4.5A 90w fast charge with upto 80% charge in 1hr. But it will also charge at 65w and maybe 45w I've read. But this will not give me the full power of the processors and gpu etc. Unless I charge at 90w 4.53A there are are some powerbank that are around £100-170 for sale but these don't give full 4.5A. Mainly around 2-3.5A so will maybe or maybe not charge she give me full power of the laptop so I'm thinking about making me own using 18650 batteries. Good Samsung or LG 2500maH plus cells. Prob around 3000mah. Im thinking I could either use a buck down or step up and use the batteries on series from 3S to 8S and then 3-4P to give me around 10000mah. I'm looking for the best efficient output so I'm not sure whether to use higher input or lower input to give me 20v. Or or maybe I could go the inveter route using a 12-24v 150w inverter?? Efficiency is the main thing here. What is the best option do you think. Should I use 12v or 24v for max effecient conversion. Ive searched the instructables for such devices but cannot seem to find anything like this. Or would I be better to buy one??? I would want to add USB and USB c also. Defo USB 2.0. Could you you please help me choose and find the answers please? I fancy the DIY route because I'm looking into solar and battery power storage and also boost my range wifi range through either ptp or directional attenna. These projects will come after the laptop powerbank. Any my help would be appreciated a lot. Kind regards. Scott.
Posted by ScottL190 1 year ago
Hi. I am a student who yearly participates in a solar boat regatta, and is wondering how he can boost his panel's rate of energy... collection. I have thought of trying reflectors, and am wondering if this would work. anyone know, or have a better idea?
Posted by DELETED_craz meanman 9 years ago
Is it possible to "hack" my wimax modem so I can boost the speed with a bi-quad antenna or through some other means? Here's the wimax modem type http://imgur.com/vrsoHqW and here's the modem opened. [img]http://i.imgur.com/JlDAezf.jpg[/img]
Posted by dmanstan 1 year ago
Hi guys. When you use solar panels and have gadgets with different voltage requirements that you want to power up. I need atleast 2 different outputs, 5v and 12v , so which is most efficient , 12/15v panels that you regulate to 5v , or 5v panels boosted to 12v? is there any general advantage in either case and i,m talking about using cheap ebay switch regulators / boost converters, not anything expensive hi tech. regards
Posted by kristerh 4 years ago
Thank you so much for those who pre-ordered the kits! I have shipped all orders now, and the kits are in stock. New orders will be shipped within 2 days. To purchase, please go to http://www.theledart.com/blog/night-joule-thief. Please see this post for the pricing and more: https://www.instructables.com/community/Joule-Thief-LED-Night-Light-Kit-PCB/ Thanks!
Posted by ledartist 6 years ago
UPDATE: Everything is shipping now. My instructable is here: "Joule Thief" LED Night Light Check out the new color changing Joule Thief! KIT Pricing is $10.50 for the kit. Kit 5 Pack Save by ordering 5 packs for $39! PCB Pricing is $4.50 for the PCB. Shipping is $5 for USA, $17 for the rest of the world. *** NOTE: The color of the PCB will be green instead of purple shown in some of the pictures. *** Payment To order, please go to my site - http://www.theledart.com/blog/archives/259. Click on "Add to cart" button and check out via PayPal. Please send messages or leave comments here if you have questions. Thanks!
Posted by ledartist 6 years ago
Please see the instructable for the details and video of this project. *** This is a color changing LED version of "Night Joule Thief". Pricing is exactly the same. *** Kit (includes PCB) Pricing is $10.50 for the kit. Shipping is $5 for USA, $17 for the rest of the world. A picture of full contents is shown below. Kit 5 Pack Save by ordering 5 packs for $39! Shipping is $5 for USA, $17 for the rest of the world. PCB only Pricing is $4.50 for the PCB. Shipping is $5 for USA, $17 for the rest of the world. Payment To order, please go to my blog page at http://www.theledart.com/blog/archives/394. You will find buttons to buy, and checkout via PayPal. Please send messages or leave comments here if you have questions. Thanks!
Posted by ledartist 6 years ago
Some of you may have seen my instructable, Several Easy Steps to Boost Your Computer's Speed, and I have been getting some feedback. But I wanted to post it to forums, see if anyone can come up with some more ideas on how to boost a computer's speed. Let me know if you can think of anything! Feel free to comment here or on the Instructable.Thanks!Lukethebook333
Posted by lukethebook333 9 years ago
Hi at school, I am making a mobile phone generator. It's only GCSE so my apologies for my lack of knowledge. It is meant to be a "wind generator" but it can basically be a renewable generator via motion. So since I get to take it home afterwards I designed it to be a little record player where you turned the platter and it would change a phone. This is where I need some help. Would this 24v motor provide enough juice to charge a lithium ion battery (with a boost or buck converter [if needed to step down to an appropriate voltage] then a constant current protection circuit etc) the output 5v to charge your phone? Here is the motor: http://uk.rs-online.com/web/p/products/2483716/?grossPr...|pcrid|88056614883|pkw||pmt||prd|2483716&gclid;=CjwKEAiA4dPCBRCM4dqhlv2R1R8SJABom9pHi1B_sRuR-4nr15ce-EWd51aCsEfYqFBsUJioUXEpvRoC1unw_wcB Thanks! For non-British readers : a GCSE is (in the UK except Scotland) a qualification in a specific subject typically taken by school students aged 14–16, at a level below A level.
Posted by MukymooD 1 year ago
Hey. I'm still learning a lot about electronics, and I'm still very new to that kind of thing, but am trying an electronics project for the Green contest anyway. I did some research on how step-up converters work and finally have settled on a circuit that would work for my project. My problem lies with one of the parts. I needed a 68uH inductor. When I ordered it, the picture below was what I got. This didn't seem quite right. It may be the correct thing, I don't know. So what I'm asking is... A. Is this the part I'm looking for? and B. How would I attach this to the PCB I'm etching for the project. Thanks in advance. My pic was a bit blurry so I found something that looked similar from the internet to go along with it.
Posted by Gjdj3 10 years ago
The building I work in has free wi-fi in the lobby. I can pick it up on the windowsill of my office, but not at my desk. The boosters I saw were for people who were boosting their own wi-fi. I want to boost someone else's and don't have access to their wiring..Any ideas?
Posted by slgibbs1 7 years ago
I recently got a few of the 3000 farad 2.7 boost caps from electronic goldmine. I have a quick question about charging them. Applying a higher than rated voltage before the capacitor is charged all the way would be fine, right? The voltage drop should cause the source voltage to approach 0, thusly below the 2.7 volt rating. As an extreme example, lets say you simply hooked up a 9 volt battery to it. Since the battery can only supply like 200mA, the voltage drops to nearly 0 as the capacitor appears to be a dead short. The dielectric (or ion exchange or napheon membrane or whatever it is in a ultracap, lol) should be fine, correct? My main goal is to later hook up one or two of these for a regenerative brake system of something like a small gokart or bike or something. Stopping at 30mph is like (assuming 200kg total mass) 20k joules, and each one can hold about 10k joules, and assuming a max efficiency of like 30 or 40% (I think itd be much lower, though), these capacitors could brake a gokart going fairly several times without having to be discharged inbetween cycled (but of course they would be). For braking, could these essentially be hooked up directly (of course with pwm, and other things, but in essence:) to the motor with a little protection circuitry to prevent overcharging the capacitors? Or would the higher voltage instantly puncture and destroy the boostcap?
Posted by guyfrom7up 7 years ago
So, I plugged in the USB to an iPod Mini and the whole cicuit goes blank. I tried it on some person's MINI, but the light shut off right when I switched the switch. HOWEVER, it did work on my iPod Nano and my sister's iPod Mini. It seems like the circuit is shorting out on the MINI and not on the Ipod Nano. I am thinking it is a problem with the noob sauce's MINI, but I do not know why it is shorting out and turning the light out on the charger. Thanks -Brennn10
Posted by Brennn10 11 years ago
Until just a few years ago, doctors believed that the brain stopped making new neural connections - meaning that the memory began to get irreversibly worse - when the body stopped developing, usually in the early 20s. And doctors knew that, like any other part of the body, neurons weaken as people age. Loss of brain function due to neural breakdown was assumed to be a normal, unavoidable part of aging. It turns out they were wrong.In the past few years, it has become clear that you can, in fact, make new neurons starting in your 20s and continuing well into old age. You can literally rewire the brain with new parts as the older parts wear out. How?There are lots of things you can do right now to preserve, protect and enhance your gray matter.14 Ways to Boost Brain Power
Posted by Keith-Kid 10 years ago
Here's a problem that I can solve, it's for a portable rechargable usb charger. The original plan used mini relays, but they consumed too much energy, so I need to solve this somehow. There's 1 usb port, I need it so whenever you plug it in a computer it powers the charging circuit, but when it's not plugged in and some other thing, such as an ipod is attached to the same usb port, the boost circuit (i'm using a lithium battery) connects to the usb port, but it doesn't charge the battery in an inefficient cycle. The boost circuit I'm using is the max1709.
Posted by guyfrom7up 10 years ago
I hesitate to ask this question in this forum as I might not understand the answer! I live in Ireland and am not a big fan of most of the dross on the radio, since I have to commute about 2.5 hours a day in my car I need something to listen to. I like BBC radio 4, but the nearest transmitter is a very very long way away, its coming from either Northern Ireland or across the irish sea from Walse. So the signal is always 'noisy' and often too 'noisy' to listen to. I can only pick up the Long wave (LW) signal as I am too far for the FM band. So is there a way that I can boost the signal? I have seen some noise reducers (they probably have a real techie name) that you put between the arial and the car, would that help? any ideas ??
Posted by edel 8 years ago
Nature News is reporting today on the development of thin flexible sheets of LEDs which could be used for medical diagnostics, or even implanted in the body to use with light-activated drug delivery. Besides these uses (obviously cooked up for the grant proposal :-) ), the clothing and other DIY uses seem fantastic! The interesting thing to me is that these sheets are made with conventional semiconductor LEDs (surface mount) and the flexibility of the leads is handled simply with extra lead lengths to pick up the slack. The original paper is being published in Nature Materials (Kim, R.-H. et al. Nature Mater. doi:10.1038/NMAT2879 (2010).
Posted by kelseymh 7 years ago
Hey everyone. Recently I went to The reject store (like a dollar store where things an cost over a dollar) and saw some garden lights selling for $2 each. I bought 4 of them. :D they come with one AAA battery each with 1.2V could I Purchase a mintyboost and modify the lights so they each charge up a set of four AAA batteries, with can detach and be used to charge USB device with the internal battery storage that was charged by the solar panels, or would it have to be 2 AA's? Thanks for the help! :D
Posted by Felixninja 6 years ago
I have a 20 year old van. The a/c leaked and it is much cheaper to buy a 120v window unit ($140 with a 3-year walk-in exchange warranty) than to pay a shop to rebuilt the vehicle a/c. I chose a 5k BTU window unit that uses 4.1 amps running, and have a 1k watt sine wave inverter. Alone, the inverter will not start the a/c unit, but will power the fan. I confirmed a trick to start motors with an inverter. I connected an 8" bench grinder to the inverter and started it. It took a few restarts to get it up to speed. Then I started the a/c and it ran without problems. The bench grinder motor was able to supply the reactive power the a/c compressor needed to start. Both continued to run without straining the van's alternator. BUT, I don't want to travel with a running bench grinder going, that's not safe. Is there another way to supply the reactive boost that is safe to travel with? Once I get a simple stable way to run the a/c I'll work on a mount to vent the hot side. The van has sliding windows.
Posted by DavidN71 3 years ago
The thermoeletric coolers are eficient or not?. hello everybody!!!!! im recently have make much research and test with tec coolers. on question have a way for boost the tec coolers eficiency. please come and post your questions and answers.
Posted by vambreace 9 years ago
Any ideas if this would work (i'm a total noob on this) red=negative blue=bass boost black= ground any suggestions on how to: make it work? make it sound better? louder without distorting? make it more suitable for mp3player/ipod? how to add (and where to put) high and/or low pass filter? the 10k log pot should serve as volume control (hope that's correct XD) my jack's all wrong i need 1/8 stereo jack....so how do i put that ? how many watts for the speaker? is a 9 volt enough to power this ? would the switch on the bass boost work?
Posted by markuy45 6 years ago
Here are graphs of the stats of two of my instructables. They clearly shows that being on the frontpage or featured in the weekly newsletter really gives you a boost.The Marble Clock (the graph with 0-5000 as the scale for pageviews) got in the frontpage as Popular in the afternoon the 14'th, you can clearly see the rate increase of pageviews.The Spooky Led Lamp (the graph with 0-10000 as the scale for pagevews) made it to the Weekly Newsletter sent to the subscribers in the eventing the 14'th. As can be seen on the graph the numbers of pageviews increased really fast at the next few hours then went back to the normal pace again. In contrast to what happened with the Marble Clock this instructable also got a real boost in the ratings due to the newsletter.Here's a link to the Instrugraph Instructable.
Posted by matseng 10 years ago
I'm not sure it is intentional, but I feel that the Instructables crew does a great job of featuring members' first instructables (given they meet a certain standard). My first Ible was featured and it's a great boost knowing that they really do pay attention. Keep up the great community and hard work, guys!!! -BG
Posted by BeanGolem 8 years ago
I need a 12 volt rechargeable battery configured like a 9 V but it can be longer,,,I need as many amps as possible........maybe connect two 9v and cut voltage...is it possible? I'm dumb about these things so be gentle.....I have 8/ 1.2Volt batteries configured in a plastic holder..but the voltage is not working out.......any way to boost the voltage on the 1.2 batteries with out a lot of bulk?
Posted by antant00 8 years ago
I have a couple of L11S6Y01 Lenovo Lithium Ion batteries 10.8V nominal, 48WH, 4400mAH batteries and a couple of their AC adapters lying around the house. I was looking up the Minty boost DIY battery back up and I was thinking of making this battery back up kit to recharge my iPhone and Samsung tablets, both of which can connect to USB power sources. My idea: 1) Get a 7 pin connector that will connect directly to my AC adapter. For example: http://www.ebay.com/itm/External-Laptop-Battery-Charger-for-Lenovo-IdeaPad-B570-G470-G570-Z570-L09L6Y02-/121091427052?pt=Laptop_Batteries&hash;=item1c319c8aec Maybe I can scavenge one such connector from this place: http://www.ebay.com/itm/IBM-X60S-Battery-Connector-/350772373819?pt=UK_Computing_Other_Computing_Networking&hash;=item51aba9a93b 2) Build a circuit similar to Minty boost : http://www.ladyada.net/make/mintyboost/icharge.html Except in this case, my source is a Li Ion rechargeable battery instead of 2 AA batteries. Any ideas and thoughts would be appreciated.
Posted by Baron_Kaz 5 years ago
So it's 5.18 in the mourning and I'm meant to be baby sitting my nephew, I have however discovered he is 100 times better then me at call of duty 4, he's only 7 by the way, so I'm letting him stay up way later then he's meant to be because he boosting my stats way thurther then I'd be able to do in a whole week. So, am I a bad uncle? He seems to be enjoying himself.
Posted by Mr Slippy Fist 10 years ago
Wave JT is an LED chaser/Larson scanner/sequencer what runs with just one AA battery. Joule Thief circuit boosts the 1.5V (or less) from the battery to 5V to power the microcontroller and LEDs. The kits are available at $19. PCB alone is $7. *** Summer Sale Price *** > see the instructable > go to my website for purchase
Posted by ledartist 6 years ago